<img src="https://ml-eu.globenewswire.com/Resource/Download/66573019-8d32-4f77-9496-1ca286cb2626?size=2" nborder="0" align="left" hspace="5" vspace="5" title="TGS logo-01 1.jpg" alt="TGS ASA"/>OSLO, Norway (25 August 2026) – TGS, a leading provider of energy data and intelligence, is pleased to announce a one-month extension to the largest seismic streamer acquisition contract offshore Indonesia. The extension is scheduled to commence in August. Kristian Johansen, CEO of TGS, commented, "We are very pleased to secure this contract extension, which reflects the continued confidence our client has in the Ramform Sovereign and our GeoStreamer® technology. The project further strengthens revenue visibility while enabling us to deliver high-quality seismic data with industry-leading acquisition efficiency." For more information, visit <a href="https://www.globenewswire.com/Tracker?data=YCpykq6JkA2FJbVj3SkdD9jEaGq_yeCJ1LTooQ50lxfGlB1vBpLcwMocuqYCiSV-fXpFGRwc-_E9woylzarjRA==" rel="nofollow" target="_blank" title="TGS.com">TGS.com</a> or contact: Bård Stenberg VP IR &amp; Business Intelligence Mobile: +47 992 45 235 <a href="https://www.globenewswire.com/Tracker?data=f02aCSNCm1QLaTh1EVLULsDDn_yTWHesQAWI0wFfnkFq6iqcvD6iIqn69_5FLvAkYgxrfN6c7jYgnUFtRi4ncQbfs8JCSQfmVcTtfJbK0PU=" rel="nofollow" target="_blank" title="investor@tgs.com">investor@tgs.com</a> About TGS TGS provides advanced data and intelligence to companies active in the energy sector. With leading-edge technology and solutions spanning the entire energy value chain, TGS offers a comprehensive range of insights to help clients make better decisions. Our broad range of products and advanced data technologies, coupled with a global, extensive and diverse energy data library, make TGS a trusted partner in supporting the exploration and production of energy resources worldwide. For further information, please visit www.tgs.com (<a href="https://www.globenewswire.com/Tracker?data=ts7Ca38WR4XucSuSi2fig-tKQeA9LXWIaGPDJKXfeSiQGFgJd9k-TAjPBvCfPFRjnS4MYiH5qQqCy9NMs8sQ724wVaGlYp3w8eeAjlZej3c=" rel="nofollow" target="_blank" title="">https://www.tgs.com/</a>). Forward Looking Statement All statements in this press release other than statements of historical fact are forward-looking statements, which are subject to a number of risks, uncertainties and assumptions that are difficult to predict and are based upon assumptions as to future events that may not prove accurate. These factors include volatile market conditions, investment opportunities in new and existing markets, demand for licensing of data within the energy industry, operational challenges, and reliance on a cyclical industry and principal customers. Actual results may differ materially from those expected or projected in the forward-looking statements. TGS undertakes no responsibility or obligation to update or alter forward-looking statements for any reason. <img alt="" src='https://ml-eu.globenewswire.com/media/OGJiMWI1NDEtODVjYi00MWI5LWI4ZTEtMzFhNTFiY2VhNjc3LTEwMTM0MjUtMjAyNi0wOC0yNS1lbg==/tiny/TGS-ASA.png' referrerpolicy='no-referrer-when-downgrade' />

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TGS Awarded Extension to Largest Seismic Acquisition Project Offshore Indonesia

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